How do I reassemble a zip file that has been emailed in multiple parts?

"It's fairly safe to assume that the file parts just need to be concatenated together.

The easiest way to do this is within 7-Zip - navigate to the folder in the 7-Zip file manager, right-click on the first file in the sequence, and select ""Combine Files..."" from the context menu.

It can also be easily done on the command line.

On Windows:

copy /B input.z* output.zip

Or Linux (or if you've got Unix command line tools on Windows using Cygwin or GnuWin32):

cat input.z* > output.zip"

"Have you tried to unzip all the files? Usually, one have to unzip just one (the first or the last).
Maybe, if you change the extesion of the .z00 to .zip, will be able to unzip all."

My guess is that they were just split directly, with no extra information, so you should be able to just concatenate them and end up with a full zip file. This thread has some links to tools that can concatenate files.
My guess is that they were just split directly, with no extra information, so you should be able to just concatenate them and end up with a full zip file. This thread has some links to tools that can concatenate files.

"Solution Using 7z

Open the folder where the split folders are stored. In my case they were 16 files named from *.7z.001 to *.7z.016
Right-click on the first of the folders and left click to select the ""Extract To"" suggested folder name proposed automatically by 7z.
7z then creates a new uncompressed folder inside the same folder and starts unzipping and combining all of them."

I created a new folder, drag the split files into that folder. Highlight all files, select Extract. This will create a new sup-folder where your combined files will be located. Used 7-zip.